| Preheat oven to 425°F |
| Lightly oil 2 rimmed baking sheets |
| 3 medium Yukon Gold potatoes, cut into 3/4-in pieces | combine in a large bowl | pour over and toss to coat | spread on pans, roast 425°F 35 to 40 min, stirring halfway |
| 1 medium sweet potato, peeled and cut into 3/4-in pieces |
| 2 medium carrots, cut into 1-in pieces |
| 2 medium red bell peppers, cut into 1-in pieces |
| 1 medium red onion, cut into wedges |
| 3 Tbsp olive oil | whisk |
| 2 cloves garlic, minced |
| 1 Tbsp fresh rosemary, chopped (or 1 tsp dried) |
| 2 tsp fresh thyme leaves (or 3/4 tsp dried) |
| 1 tsp salt |
| 1/2 tsp ground black pepper |